PLP1 and Pelizeaus-Merzbacher spectrum disorder: Among this list we identified FA2H and PLP1 (Spastic Paraplegia 35 (MIM: 612319) and Pelizaeus-Merzbacher Disease (MIM: 312080)) as well as five genes in which mutations are associated with peripheral demyelinating disorders (PMP22 [MIM: 601097], LITAF [MIM: 601098], NDRG1 [MIM: 601455], SH3TC2 [MIM: 601596], SOX10 [MIM: 609136], and YARS [MIM: 608323]) (Figure 4).